Abstract
Abstract The development of a thick-film pressure sensor on a stainless steel substrate for application in cars propelled by compressed methane gas is presented. The development is based on the classic model of a circular diaphragm on which four thick-film resistors are screen-printed. They are connected in a Wheatstone bridge configuration. The sensor response between 0 and 400 bar shows a sensitivity of 11.31 mV/V with a 0.1% FS linearity, 0.2% FS hysteresis and 2 μV/V/°C zero thermal drift. The constant-temperature zero shift due to the creep effect is minimized by annealing the samples.
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